Mostly sunny. Patchy fog in the early morning. Areas of smoke haze. Winds N/NW and light tending NW/NE 20 to 30 km/h in the morning then tending N/NW 15 to 20 km/h in the evening. Overnight temperatures falling to between 8 and 12 with daytime temperatures reaching around 30.

Today Weather

Great Marlow

Now

17.6°c

Feels Like:

17.7°

Wind:

NNW 7km/h

Gusts:

11km/h

Humidity:

82%

8°

Min

32°

Max

Today in Great Marlow

Mostly sunny. Patchy fog in the early morning. Areas of smoke haze. Winds N/NW and light tending NW/NE 20 to 30 km/h in the morning then tending N/NW 15 to 20 km/h in the evening. Overnight temperatures falling to between 8 and 12 with daytime temperatures reaching around 30.

Tomorrow

8°

Min

32°

Max

Partly cloudy. Areas of smoke haze in the morning. High chance of showers in the late afternoon and evening. The chance of a thunderstorm in the afternoon and evening. Winds N/NW 15 to 20 km/h shifting S/SW in the afternoon. Overnight temperatures falling to between 11 and 15 with daytime temperatures reaching the mid to high 20s.

Sheep graziers are warned that cold temperatures, showers and southwesterlywinds are expected to develop during Monday with the passage of a cold front.Areas likely to be affected include the Southern Tablelands, South West Slopes,Snowy Mountains and Australian Capital Territory forecast districts and partsof the Illawarra, South Coast, Central Tablelands and Riverina forecastdistricts. There is a risk of losses of lambs and sheep exposed to theseconditions.

7 day forecast

Today:
Mostly sunny. Patchy fog in the early morning. Areas of smoke haze. Winds N/NW and light tending NW/NE 20 to 30 km/h in the morning then tending N/NW 15 to 20 km/h in the evening. Overnight temperatures falling to between 8 and 12 with daytime temperatures reaching around 30.

Forecast for Great Marlow (29.6562°S, 152.9732°E, 10m AMSL)

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Summary

Minimum

8°

10°

9°

11°

11°

12°

13°

Maximum

32°

26°

25°

25°

27°

28°

30°

Chance of rain

5%

90%

20%

10%

30%

20%

90%

Likely amount

< 1mm

5-10mm

< 1mm

< 1mm

< 1mm

< 1mm

5-10mm

UV index

High

Moderate

Moderate

High

-

-

-

Frost risk

Nil

Nil

Nil

Nil

Nil

Nil

Nil

9am

3pm

9am

3pm

9am

3pm

9am

3pm

9am

3pm

9am

3pm

9am

3pm

Wind speed

6(km/h)

15(km/h)

7(km/h)

18(km/h)

10(km/h)

20(km/h)

4(km/h)

19(km/h)

5(km/h)

22(km/h)

8(km/h)

22(km/h)

8(km/h)

19(km/h)

Wind direction

NW

NNE

S

ESE

WSW

S

WSW

E

NNE

ENE

N

ENE

N

ENE

Relative humidity

51%

15%

58%

52%

63%

40%

62%

47%

67%

49%

71%

45%

65%

41%

Dew point

9°C

2°C

12°C

14°C

11°C

10°C

13°C

12°C

15°C

15°C

15°C

15°C

16°C

15°C

First light

5:23am

5:21am

5:20am

5:19am

5:18am

5:16am

5:15am

Sunrise

5:46am

5:45am

5:44am

5:43am

5:41am

5:40am

5:39am

Sunset

5:41pm

5:41pm

5:42pm

5:42pm

5:43pm

5:44pm

5:44pm

Last light

6:05pm

6:05pm

6:06pm

6:06pm

6:07pm

6:07pm

6:08pm

28 Day Rainfall forecast

Great Marlow Rain Forecast

Great Marlow 28-day Rainfall Forecast

SUN

MON

TUE

WED

THU

FRI

SAT

15

16

17
HIGH

18
LOW

19
MEDIUM

20
HIGH

21
MEDIUM

22
MEDIUM

23
LOW

24

25

26
LOW

27
LOW

28

29

30
LOW

Oct 1

2

3

4

5

6
LOW

7
MEDIUM

8

9
LOW

10
MEDIUM

11
LOW

12
MEDIUM

13
MEDIUM

CHANCE OF RAINFALL WITHIN DISTRICT

NIL < 25%

LOW 25% to 50%

MEDIUM 50% to 75%

HIGH ≥ 75%

Issued Sep15

Issue Notes

The hemispheric long wave pattern has remained stable in recent weeks. There are five main troughs. Currently the most significant troughs are near the longitudes of South Africa, the Indian Ocean, eastern Australia, the south Pacific, and the Atlantic Ocean.

Summary:

Over southern and eastern Australia the cold front events with potential to bring widespread rain are now expected about 3 October to 7 October, 12 October to 16 October, and 18 October to 22 October. Rain events originating in the tropics and moving south are possible about 8 October to 12 October.
Over Western Australia the strongest cold fronts should occur about 26 September to 30 September, 10 October to 14 October, and 14 October to 18 October.

12 Month Rainfall Forecast

Great Marlow Rain Forecast

Great Marlow 12-month Rainfall Forecast

Sep

Oct

Nov

Dec

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

2019

2020

2

4

3

6

5

6

5

9

7

7

5

6

10

5

0

1

2 - 3

4 - 7

8 - 9

10

Well below normal

Below normal

Near normal

Above normal

Well above normal

Issue Notes - Issued Sep 10

ENSO status: Neutral
IOD status: Positive
Sea surface temperatures (SSTs) continued the cooling trend over the central Pacific during August, with areas in the eastern equatorial Pacific exhibiting below average temperatures for the first time in about two years.
The Nino3.4 index lingered between 0.2 and 0.1 through the month of August. The Southern Oscillation Index (SOI) recorded a value of -4.4 during the past month, which remains in neutral territory.
Current consensus suggests warmer than average SSTs will persist across the equatorial Pacific Ocean through the austral spring, but well within neutral values. Although, three out of eight international models maintain a slightly warmer than average Pacific Ocean through the end of 2019, none of these are likely to reach El Nino thresholds during the 2019/2020 summer. Moreover, the IRI ENSO forecast suggests less than 40% of another El Nino developing over the next 12 months, with a neutral ENSO the most likely outcome.
To the west of Australia, the Indian Ocean Dipole (IOD) remains strongly positive. All six international models maintain a strong positive event until the beginning of the summer.
The climate outlook for spring favours below average rainfall across the southern half, and in particular the eastern half of the continent. During Positive IODs, central and southeastern Australia tend to see a reduction in rainfall during the end of winter and spring due to a reduction of moisture streaming from the northwest.
On the other hand, far southern Victoria and western Tasmania could see above average rainfall during this period as a sudden stratospheric warming (SSW) over Antarctica looks to enhance the negative phase of the southern annular mode (SAM) over the coming months.

Issue Notes

The hemispheric long wave pattern has remained stable in recent weeks. There are five main troughs. Currently the most significant troughs are near the longitudes of South Africa, the Indian Ocean, eastern Australia, the south Pacific, and the Atlantic Ocean.

Summary:

Over southern and eastern Australia the cold front events with potential to bring widespread rain are now expected about 3 October to 7 October, 12 October to 16 October, and 18 October to 22 October. Rain events originating in the tropics and moving south are possible about 8 October to 12 October.
Over Western Australia the strongest cold fronts should occur about 26 September to 30 September, 10 October to 14 October, and 14 October to 18 October.

Great Marlow Rain Forecast

Great Marlow 12-month Rainfall Forecast

Sep

Oct

Nov

Dec

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

2019

2020

2

4

3

6

5

6

5

9

7

7

5

6

10

5

0

1

2 - 3

4 - 7

8 - 9

10

Well below normal

Below normal

Near normal

Above normal

Well above normal

Issue Notes - Issued Sep 10

ENSO status: Neutral
IOD status: Positive
Sea surface temperatures (SSTs) continued the cooling trend over the central Pacific during August, with areas in the eastern equatorial Pacific exhibiting below average temperatures for the first time in about two years.
The Nino3.4 index lingered between 0.2 and 0.1 through the month of August. The Southern Oscillation Index (SOI) recorded a value of -4.4 during the past month, which remains in neutral territory.
Current consensus suggests warmer than average SSTs will persist across the equatorial Pacific Ocean through the austral spring, but well within neutral values. Although, three out of eight international models maintain a slightly warmer than average Pacific Ocean through the end of 2019, none of these are likely to reach El Nino thresholds during the 2019/2020 summer. Moreover, the IRI ENSO forecast suggests less than 40% of another El Nino developing over the next 12 months, with a neutral ENSO the most likely outcome.
To the west of Australia, the Indian Ocean Dipole (IOD) remains strongly positive. All six international models maintain a strong positive event until the beginning of the summer.
The climate outlook for spring favours below average rainfall across the southern half, and in particular the eastern half of the continent. During Positive IODs, central and southeastern Australia tend to see a reduction in rainfall during the end of winter and spring due to a reduction of moisture streaming from the northwest.
On the other hand, far southern Victoria and western Tasmania could see above average rainfall during this period as a sudden stratospheric warming (SSW) over Antarctica looks to enhance the negative phase of the southern annular mode (SAM) over the coming months.